Water jug



FIG. 1 is a front elevational view of a water jug as shown anddescribed;

FIG. 2 is a left side elevational view, the right side being identicalthereto;

FIG. 3 is a front, left, top perspective view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof.

CLAIM The ornamental design for a water jug, as shown and described.